<template>
  <div>
    <div class="search">
      <input type="text" placeholder="输入城市名或拼音" class="search-input" v-model="keyword">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item in list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
        <!-- 包含放数组，数组再转手，转手在遍历 -->
        <li class="search-item border-bottom" v-show="!list.length">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  name: 'citysearch',
  props: {
    cities: Object
  },
  data() {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  methods: {
    // handleCityClick(city) {
    //   // console.log(1)
    //   this.$store.commit('changeCity', city)
    //   this.$router.push('/')
    // }, 重复改为vue 中的map 映射
    ...mapMutations(['changeCity']),
    //把store中的mutations 中的changeCity方法映射到组件 这个方法 this.changeCity就可以用了
    handleCityClick(city) {
      // console.log(1)
      // this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    }
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.search)
    //为了搜索后还能滚动
  },
  watch: {
    keyword() {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach(v => {
            if (
              v.spell.indexOf(this.keyword) > -1 ||
              v.name.indexOf(this.keyword) > -1
            ) {
              result.push(v)
            }
          })
        }
        this.list = result
      }, 100)
    }
  }
}
</script>

<style scoped>
.search {
  height: 0.72rem;
  background: #00bcd4;
  padding: 0 0.1rem;
}
.search-input {
  box-sizing: border-box;
  height: 0.62rem;
  line-height: 0.62rem;
  width: 100%;
  text-align: center;
  border-radius: 0.06rem;
  color: #666;
  padding: 0 0.1rem;
}
.search-content {
  z-index: 1;
  overflow: hidden;
  position: absolute;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: #eee;
}
.search-item {
  line-height: 0.62rem;
  padding-left: 0.2rem;
  color: #666;
  background: #fff;
}
</style>